PERMFILE67480 - Laserfiche WebLink

Home Browse Search

1 ~~ u L~ ., ~~ EXHIBIT A-3 8-Bresser-Stapleton sandy loamy, 8 to 25 percent slopes. These deep, well drained soils ere on pontly rolling and hilly rrdgea and valley srde elopes. Eluvnturn ranges from 5,300 to 6,4()0 lest. Average annual prccrpr• tatlon ranges from 14 to 17 inches, end average annual air temperature ie about 47 degrees F. The Bresser soil makes up about 50 percent of the unit end the Stapleton loll makes up about 25 percent. The Bresser sail is on the wider ridpetops end the more rolling side slopes. The Stapleton soil k on the narrow ridgetops and steeper ndgee end aide elopes. Included with these soils in mapping and making up about 25 percent of the un11, ere small areas of Cush- man loam and Weld loam that have 4 to 8 percent slopes. Also included are shallow, loamy soils over inter• bedded shale and sandstone and sandstone outcrops on steep banks along narrow drainageways. The Bresser soil formed In alluvium and residuum weathered from arkoek: sedimentary rock. Typically, the surface layer b greyish brown sandy loam about 7 Inches thick. The subsoil to a depth of about ?9 inches la brown and pale brawn sandy clay loam and sandy loam. The substratum is very pale brown loamy sand to a depth of 00 Inches. Penneabillty and available water capacity are moder- ate. SuAace runotl is medium, and the hazard of erosion is moderate. The Stapleton soil formed In alluvium end residuum weathered Irom erkosic aedlmenlary rock. Typically, the surface layer is dark pray sandy loam about 12 inches thick. The subsoil ie greyish brown coarse sandy loam to a depth of about 37 inches. The substratum Is fight gray gravelly loamy send to a depth of 80 Inches. Permeability Is rapid, and available water, capacity is moderate. Surface runoff is medium, end the hazard of eroabn is moderate. Gullying has taken place throughout the urdt, mainy along stxk trails. Moat of the soils in this unit ere used for grazing. They have poor potential for cropland. They have lair to good potental for wilQlile habitat and for moat engineering _~~... _Zg_ Rangeland vegetation Is mainly blue grams, prairie eandreed, little blueslem, needleandthread, prairie june• grass, western wheatgraes; and sideoate prams. When range condition delarlorsles because of ovorprsitnq w Otha/ ubes, pra9aea such ae blue prAma pnd nelwe b ueprasaes, end forte, such. as hairy poldaster, in- crease. Sleepygrase and annuals replace tfteee presses If the range becomes seriously detsrlonted. Seeding the range is recommended to revegetate de- plated areas In order to protect the soil hom wind and water eroabn. Native presses, such as weatem wheat• grsse, Iltlle bluestem, eWeoals grams, and prairie ean- dread, are recommended for verge seeding. Tame grasses, such as crested wheatpress, Russian wildrye, pubescent wheatprass, or Intermediate wttestprass, may also be used. These lolls ere generally suited to windbreaks and environmental plantlngs. Wend erosion is the main tlrNla- tlon to the eslabliahment of trees end shrubs. This hazard can be overcome by culWatirtq only in the hee row end leaving a strip of vepeutNe cover between the 'rows. Supplemental Irrlgatbn fe generaly necessary al the time of planting and during dry periods. The best suited shrubs ere akunktwsh sumac, American plum, and Hansen rose. Where these soils are used for homesiteo and other urban purposes, the main IlmlteUan is steep slopes. Spe- cral planning and designs ere used to overcome This limitation end other minor ones. These soils are in capability subclass Vle, rtortirripated. t